Update Samsung Galaxy S3 to Android 4.1.2 with Slim Bean JZO54K

Just recently Android developers came up with another custom firmware update for Galaxy S3 to Android 4.1.2 Jelly Bean. This could turn out to be really useful in the lack of an official upgrade from Samsung.

The following update is only available for Galaxy S3 GT-I9300 models (Check Settings, About Device, Model Number) so if you are the owner of a different device you should not go on any further.

Just to remember you, any modifications you bring to the original firmware by installing custom ROMs is putting your phone in danger of bricking. This means you continue on your own risk.

Before you go on with the installation, you should make sure your Galaxy S3 meets the necessary requirements:

– Install as USB drivers for your Windows OS

– In order to save all your personal data do a backup of your phone

– Go to Settings, Developer options, USB debugging and check it.

– In order for the update to work, you will need a rooted Galaxy S3. If your phone is not rooted, you can check our tutorial on how to root a Samsung Galaxy S3 device. This rooting method will also include ClockworkMod, which is also required to proceed with the 4.1.2 Slim Beat Update.

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